From: Marek Vasut <marex@denx.de>
To: Robert Schwebel <r.schwebel@pengutronix.de>
Cc: "Lars-Peter Clausen" <lars@metafoo.de>,
linux-iio@vger.kernel.org, Jonathan Cameron <jic23@kernel.org>,
linux-arm-kernel@lists.infradead.org, Wolfgang Denk <wd@denx.de>
Subject: Re: [PATCH] IIO: Add basic MXS LRADC driver
Date: Fri, 20 Jul 2012 13:32:45 +0200 [thread overview]
Message-ID: <201207201332.46091.marex@denx.de> (raw)
In-Reply-To: <20120720083920.GY12601@pengutronix.de>
Dear Robert Schwebel,
> On Fri, Jul 20, 2012 at 04:18:41AM +0200, Marek Vasut wrote:
> > One more thing I'm curious about. There's another ADC block on the
> > CPU, called HSADC (high-speed ADC). It can sample even up to
> > 2Msamples/s. If I were to, say -- sample at 100kHz and be able to DMA
> > the results into memory -- is there any way to push such results into
> > userland somehow? Or how to operate such fast beast?
>
> As this unit is mainly intended for things like laser / barcode
> scanners, wouldn't v2l2 be a good abstraction for it (with one line and
> N pixels)? Just an idea, didn't look too closely.
Considering it's not only for barcode scanners, but also some crazy sampling, I
won't go for v4l2
Best regards,
Marek Vasut
WARNING: multiple messages have this Message-ID (diff)
From: marex@denx.de (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] IIO: Add basic MXS LRADC driver
Date: Fri, 20 Jul 2012 13:32:45 +0200 [thread overview]
Message-ID: <201207201332.46091.marex@denx.de> (raw)
In-Reply-To: <20120720083920.GY12601@pengutronix.de>
Dear Robert Schwebel,
> On Fri, Jul 20, 2012 at 04:18:41AM +0200, Marek Vasut wrote:
> > One more thing I'm curious about. There's another ADC block on the
> > CPU, called HSADC (high-speed ADC). It can sample even up to
> > 2Msamples/s. If I were to, say -- sample at 100kHz and be able to DMA
> > the results into memory -- is there any way to push such results into
> > userland somehow? Or how to operate such fast beast?
>
> As this unit is mainly intended for things like laser / barcode
> scanners, wouldn't v2l2 be a good abstraction for it (with one line and
> N pixels)? Just an idea, didn't look too closely.
Considering it's not only for barcode scanners, but also some crazy sampling, I
won't go for v4l2
Best regards,
Marek Vasut
next prev parent reply other threads:[~2012-07-20 11:32 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-04 2:15 [PATCH] IIO: Add basic MXS LRADC driver Marek Vasut
2012-07-04 2:15 ` Marek Vasut
2012-07-04 4:30 ` Wolfgang Denk
2012-07-04 4:30 ` Wolfgang Denk
2012-07-04 8:35 ` Lars-Peter Clausen
2012-07-04 8:35 ` Lars-Peter Clausen
2012-07-04 23:48 ` Marek Vasut
2012-07-04 23:48 ` Marek Vasut
2012-07-05 8:33 ` Lars-Peter Clausen
2012-07-05 8:33 ` Lars-Peter Clausen
2012-07-05 19:53 ` Marek Vasut
2012-07-05 19:53 ` Marek Vasut
2012-07-19 14:23 ` Marek Vasut
2012-07-19 14:23 ` Marek Vasut
2012-07-19 14:33 ` Lars-Peter Clausen
2012-07-19 14:33 ` Lars-Peter Clausen
2012-07-19 15:15 ` Marek Vasut
2012-07-19 15:15 ` Marek Vasut
2012-07-19 19:26 ` Marek Vasut
2012-07-19 19:26 ` Marek Vasut
2012-07-20 2:18 ` Marek Vasut
2012-07-20 2:18 ` Marek Vasut
2012-07-20 8:39 ` Robert Schwebel
2012-07-20 8:39 ` Robert Schwebel
2012-07-20 11:32 ` Marek Vasut [this message]
2012-07-20 11:32 ` Marek Vasut
2012-07-20 14:09 ` Lars-Peter Clausen
2012-07-20 14:09 ` Lars-Peter Clausen
2012-07-22 19:48 ` Jonathan Cameron
2012-07-20 14:11 ` Lars-Peter Clausen
2012-07-20 14:11 ` Lars-Peter Clausen
2012-07-20 15:12 ` Marek Vasut
2012-07-20 15:12 ` Marek Vasut
2012-07-09 9:19 ` Juergen Beisert
2012-07-09 9:19 ` Juergen Beisert
2012-07-09 9:52 ` Lars-Peter Clausen
2012-07-09 9:52 ` Lars-Peter Clausen
2012-07-09 10:03 ` Marek Vasut
2012-07-09 10:03 ` Marek Vasut
2012-07-10 9:20 ` Juergen Beisert
2012-07-10 9:20 ` Juergen Beisert
2012-07-10 9:26 ` Marek Vasut
2012-07-10 9:26 ` Marek Vasut
2012-07-10 9:49 ` Juergen Beisert
2012-07-10 9:49 ` Juergen Beisert
2012-07-10 10:08 ` Marek Vasut
2012-07-10 10:08 ` Marek Vasut
2012-07-10 10:26 ` Juergen Beisert
2012-07-10 10:26 ` Juergen Beisert
2012-07-10 10:35 ` Lars-Peter Clausen
2012-07-10 10:35 ` Lars-Peter Clausen
2012-07-10 10:41 ` Juergen Beisert
2012-07-10 10:41 ` Juergen Beisert
2012-07-10 10:45 ` Marek Vasut
2012-07-10 10:45 ` Marek Vasut
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